Chapter 4 Atoms
Authored by Anaiz Alvidrez
Science
9th Grade
NGSS covered
Used 132+ times
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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Dalton's atomic theory was accepted because
there was evidence to support it
Democritus said that it was correct
Dalton invented the electron microscope
Dalton showed how molecules are formed
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atoms have no electric charge because they
have an equal number of charged and noncharged particles.
have neutrons in their nuclei.
have an equal number of electrons and protons.
have an equal number of neutrons and protons.
Tags
NGSS.HS-PS2-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the new model of the atom, electrons behave like
planets orbiting the sun.
waves on a vibrating string.
light energy in a vacuum.
planets rotating on their axes.
Tags
NGSS.MS-PS4-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to modern atomic theory, it is nearly impossible to determine an electron's exact
color.
position.
charge.
mass.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Valence electrons determine an atom's
mass.
chemical properties.
electric charge.
period.
Tags
NGSS.HS-PS1-1
NGSS.HS-PS1-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the atomic mass of carbon is 12 u, 1 mole of pure carbon will have a mass of
6 g.
6 mol.
12 g.
12 mol.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Democritus's original atomic theory was revised because it
claimed matter is made of atoms.
claimed atoms could be divided.
explained what electrons are.
did not have scientific basis.
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